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Not only do we offer full tunes for your Engine Control Unit (ECU), but we also offer full tunes for your Transmission Control Unit/Module (TCU/TCM) on select automatic transmission vehicles such as the E36 325i and E34 540i.

It’s best practice to CONTACT US before ordering this item so that we can discuss your needs and goals.

In most cases, this will require you to send in your TCU to be modified by us.


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